Medium
31 on Alpha E-Tec Plus 28

Your boiler has lost its connection to your smart thermostat or wall controller, meaning it does not know when to turn the heating on.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Loss of communication with external control (Alpha Climatic) - Loss of connection between the boiler and Alpha Climatic control unit

From this model's manual
Verified against the Alpha E Tec Plus 28 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check if the batteries in your Alpha Climatic thermostat need replacing.Ensure the thermostat is within range of the boiler and has not been moved too far away.Try resetting the boiler by turning the selector switch to 'RESET' for a few seconds.

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